论文标题
大众通过平面内纳米孔中的氧化石膜膜中的大众传输
Mass transport via in-plane nanopores in graphene oxide membranes
论文作者
论文摘要
Angstrom将二维层压板中的溶剂限制在穿过层间间距，相邻床单之间的间隙以及通过平面孔中。其中，缺乏研究通过平面孔中的质量传输的实验访问。在这里，我们通过离子照射在氧化石墨烯膜中创建这些纳米孔，并精确控制官能团，孔径和孔密度。低离子诱导的孔密度导致膜的轻度降低和渗透量增加。较高的孔密度导致明显的减少和纯净水的完全阻塞，因此由于氢网络的减弱而导致乙醇水混合物渗透。我们通过模拟确认，溶剂吸引了官能团对孔的吸引力和易于氢网络的易于允许在平面孔传输中至关重要。
Angstrom confined solvents in two-dimensional laminates travel through interlayer spacings, gaps between adjacent sheets, and via in plane pores. Among these, experimental access to investigate the mass transport through in plane pores is lacking. Here, we create these nanopores in graphene oxide membranes via ion irradiation with precise control over functional groups, pore size and pore density. Low ion induced pore densities result in mild reduction and increased water permeation for the membranes. Higher pore densities lead to pronounced reduction and complete blockage of pure water however allows permeation of ethanol water mixture due to weakening of hydrogen network. We confirm with simulations, that the attraction of the solvents towards the pores with functional groups and disruption of the angstrom confined hydrogen network is crucial to allow in plane pore transport.
